Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cuu nang » chuc nang, cam nang, cuu van
cac truc » cau truc, cac tru, cac trung
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
hanh doi » thanh doi, hanh noi, hang doi
cua viet » ca viet, hoa viet, cua vat
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
qua cac » cua cac
x hoi » xa hoi, o hoi, x ho

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (co sach)) cuu nang x hoi. hieu qua cac truc van hanh doi ((cua triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) cuu nang x hoi. hieu qua cac truc van hanh doi ((cua triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) cuu nang x hoi. hieu qua cac truc van hanh doi ((cua triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) cuu nang x hoi. hieu qua cac truc van hanh doi ((cua triet) or (cua viet))*.